diff --git a/fs/btrfs/Makefile b/fs/btrfs/Makefile
index 555c962fdad6..460eced3f5bd 100644
--- a/fs/btrfs/Makefile
+++ b/fs/btrfs/Makefile
@@ -11,7 +11,8 @@ condflags := \
 	$(call cc-option, -Wunused-but-set-variable)		\
 	$(call cc-option, -Wunused-const-variable)		\
 	$(call cc-option, -Wpacked-not-aligned)			\
-	$(call cc-option, -Wstringop-truncation)
+	$(call cc-option, -Wstringop-truncation)		\
+	$(call cc-option, -Wmaybe-uninitialized)
 subdir-ccflags-y += $(condflags)
 # The following turn off the warnings enabled by -Wextra
 subdir-ccflags-y += -Wno-missing-field-initializers